HEMIPTERA OF COLORADO 
129 
market (Gillette). 
l/Cpidosaphes {Mytilaspis) citricola Pack. Det. through Howard. 
On lemons exposed for sale in the shops (Cockerell, 10). 
Fort Collins, May, common on‘‘rusted” oranges in market 
(Baker), and December 28th on California oranges and 
lemons (Gillette). 
Chionaspis pinifolii Fitch. Det. Cockerell. 
Fort Collins, October 6tli, abundant on spruce; Manitou, 
September 29th on spruce (Gillette). 
Chionaspis ortholohis Comst. var. 
On willow at West Cliff, as C. salicis L. (Cockerell, 10). 
Chionaspis ortholohis Comst. var. Det. Cockerell. 
Denver, June 10th on cottonwood (John Tobias). 
In regard to the above record Cockerell (in litt.) says:—“The Wet Mountain Valley 
salicis recorded by me, was not true salicis but ortholobis var.” 
Regarding the spe'iies ortholobis and salicis Cockerell (in litt.) further says:—“If you 
look at Comstock’s descriptions you will find tliat he alludes to a ditference in the 
position of the median lobes of ortholobis and salicis. 
Ortholobis has these lobes close together (see figure), 
whereas salicis has them divergent (see figure). Now we 
have a specimen of ortholobis from California, from Mr. B. 
W. Griffith, which shows the lobes close together as 
Comstock describes. But your Denver species show them 
wide apart, as in salicis. Yet your Denver scales are like 
the Nebraska ortholobis (see my article in Can. Ent.) to all 
outward appearance, and are not like salicis. But at this 
point we prepared some English salicis, from Mr. Newstead, 
and they have the lobes close together as in ortholobis. 
All this seems rather to confirm what I have suspected for some time, that the so-called 
salicis of this country ks not salicis at all, but a distinct species. If so, the synonymy of 
the species discussed will probably stand thus: 
(1.) C. salicis (L). Europe. 
{•i.) C. ortholobis Comst. U. S. 
(3.) C. salicis-nigrae (Walsh.) U. S. or ‘equals ’salicis Comst., not L. 
It is by no means clear, however*, that your Denver scale is specifically distinct from 
the Nebraska one, which we are calling otholobis (vide. Can. Ent.) and as it is certainly 
not true European salicis, I should advise you to call it C. ortholobis var. for the present. 
Aulacaspis boiscliivalii Sign. ^ Det. Cockerell. 
Denver, November 24th on palm in greenhouse (Gillette). 
Palaeococcus simplex Scudder. 
Fossil at Florissant (Scudder, Tert. Ins. N. A.). 
